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Summarize the following text in no more than five sentences.

New prospects in stem cell research have brought about significant developments in the field of medicine, with the potential to treat conditions that were previously untreatable. This is due to new techniques in isolating and cultivating stem cells, and the demands and challenges these techniques pose. First, there is the source of the cells. Cells can be taken from embryos or from adult bodies, which has raised ethical and political questions. Then, there is the difficulty in preserving the cells in their undifferentiated state - and that is why research focused on affirming the potential to harvest and utilize adult stem cells was met with much enthusiasm, due to the absence of ethical considerations.


assistant
New breakthroughs in stem cell research have enabled medical treatments that were previously impossible. The main challenge is finding the best sources of cells. Some scientists prefer harvesting from embryos while others prefer adult bodies. The ability to preserve cells in their undifferentiated state, an accomplishment made possible using adult cells, has been widely praised and widely accepted by the public. Overall, this exciting new field of research holds great potential for many medical treatments that were previously deemed impossible.